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The management of changing types in an object-oriented database

... KB We examine the problem of type evolution in an object-oriented database environment. Type definitions are persistent objects in the database and as such may be modified and shared. The effects of changing ...

Publication - cat - 06/15/2023 - 14:51 - 0 comments - 1 attachment

A Unifying Framework for Version Control in a CAD Environment

... of the most important functions which need to be supported in integrated computer-aided design (CAD) systems. In this paper we address a broad spectrum of semantic and operational issues in ...

Publication - cat - 07/28/2016 - 08:29 - 0 comments - 0 attachments

An O(ND) Difference Algorithm and Its Variations

... A into B have long been known to be dual problems. In this paper, they are shown to be equivalent to finding a shortest/longest path in an edit graph. Using this perspective, a simple O(ND) time and space ...

Publication - huliganka - 04/16/2013 - 23:16 - 0 comments - 1 attachment

A Comparative Analysis of Methodologies for Database Schema Integration

... nonredundant, unified representation of all data managed in an organization. This is achieved only when methodologies are available to ... then a comparative review of the work done thus far in this area. Such a framework, with the associated analysis of the existing ...

Publication - admin - 04/16/2013 - 12:49 - 0 comments - 1 attachment

Losslessness and semantic correctness of database schema transformation: another look at schema equivalence

... two groups of relation schemata play important roles in a database environment. These transformations are used for obtaining normal ... belonging to one group of schemata are usually maintained in computer storage, while those belonging to another group of schemata can be ...

Publication - cat - 04/15/2013 - 20:27 - 0 comments - 1 attachment